/* ============================================================
   LAB.CSS — Lab & Recherche page
   ============================================================ */

/* ── Active nav link ── */
.nav__link--active {
  color: var(--clr-blue) !important;
}

/* ── Lab Hero ── */
.lab-hero {
  padding: calc(var(--nav-height) + var(--sp-16)) 0 var(--sp-16);
  position: relative;
}

.lab-hero__inner {
  max-width: 680px;
}

.lab-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  color: var(--clr-text-muted);
  text-decoration: none;
  margin-bottom: var(--sp-6);
  transition: color var(--transition-fast);
}

.lab-breadcrumb:hover { color: var(--clr-blue); }

.lab-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-bottom: var(--sp-5);
}

.lab-hero__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--clr-cyan);
  display: inline-block;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

.lab-hero__title {
  font-size: var(--fs-5xl);
  font-weight: var(--fw-extrabold);
  letter-spacing: var(--ls-tight);
  line-height: 1.1;
  color: var(--clr-text-primary);
  margin-bottom: var(--sp-5);
}

.lab-hero__desc {
  font-size: var(--fs-lg);
  color: var(--clr-text-secondary);
  line-height: var(--lh-relaxed);
  max-width: 560px;
}

/* ── Sections ── */
.lab-section {
  padding: var(--sp-20) 0;
}

.lab-section--alt {
  background: rgba(255,255,255,0.015);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}

.lab-section__header {
  margin-bottom: var(--sp-10);
}

.lab-section__label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-blue);
  margin-bottom: var(--sp-3);
}

.lab-section__label::before {
  content: '— ';
  opacity: 0.5;
}

.lab-section__title {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--clr-text-primary);
  letter-spacing: var(--ls-tight);
}

/* ── Grids ── */
.lab-research__grid,
.lab-items__grid,
.lab-git__grid,
.lab-watch__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--sp-6);
}

/* ── Empty state card ── */
.lab-card--empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  padding: var(--sp-10) var(--sp-8);
  background: var(--clr-bg-card);
  border: 1px dashed var(--clr-border);
  border-radius: var(--radius-xl);
  text-align: center;
  color: var(--clr-text-muted);
  min-height: 180px;
}

.lab-card-empty__icon {
  font-size: 2rem;
  opacity: 0.5;
  color: var(--clr-text-muted);
}

.lab-card-empty__text {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-text-secondary);
}

.lab-card-empty__sub {
  font-size: var(--fs-xs);
  color: var(--clr-text-muted);
}

/* ── Real content cards (à utiliser quand rempli) ── */
.lab-research-card,
.lab-item-card,
.lab-git-card,
.lab-watch-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-7);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.lab-research-card:not(.lab-card--empty):hover,
.lab-item-card:not(.lab-card--empty):hover,
.lab-git-card:not(.lab-card--empty):hover,
.lab-watch-card:not(.lab-card--empty):hover {
  border-color: var(--clr-blue);
  transform: translateY(-2px);
}

.lab-card__label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-cyan);
  margin-bottom: var(--sp-3);
}

.lab-card__title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--clr-text-primary);
  margin-bottom: var(--sp-2);
  line-height: var(--lh-snug);
}

.lab-card__desc {
  font-size: var(--fs-sm);
  color: var(--clr-text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--sp-5);
}

.lab-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-5);
}

.lab-card__tag {
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  padding: 2px 10px;
  border-radius: 99px;
  background: rgba(59,130,246,0.1);
  color: var(--clr-blue);
  border: 1px solid rgba(59,130,246,0.2);
}

.lab-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-blue);
  text-decoration: none;
  transition: gap var(--transition-fast);
}

.lab-card__link:hover { gap: var(--sp-3); }

.lab-card__status {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--clr-text-muted);
  margin-top: var(--sp-1);
}

.lab-card__status--soon {
  color: var(--clr-cyan);
}

/* ── Lab groups ── */
.lab-group {
  margin-bottom: var(--sp-12);
}

.lab-group:last-child {
  margin-bottom: 0;
}

.lab-group__label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-text-secondary);
  letter-spacing: 0.04em;
  margin-bottom: var(--sp-5);
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid var(--clr-border);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .lab-research__grid,
  .lab-items__grid,
  .lab-git__grid,
  .lab-watch__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .lab-hero { padding: calc(var(--nav-height) + var(--sp-10)) 0 var(--sp-10); }
  .lab-hero__title { font-size: var(--fs-4xl); }
  .lab-hero__desc { font-size: var(--fs-base); }

  .lab-research__grid,
  .lab-items__grid,
  .lab-git__grid,
  .lab-watch__grid { grid-template-columns: 1fr; }

  .lab-section { padding: var(--sp-12) 0; }
  .lab-section__title { font-size: var(--fs-2xl); }
}

@media (max-width: 480px) {
  .lab-hero__title { font-size: var(--fs-3xl); }
  .lab-group { margin-bottom: var(--sp-8); }
  .lab-group__label { font-size: var(--fs-xs); }
  .lab-card__title { font-size: var(--fs-base); }
  .lab-breadcrumb { font-size: var(--fs-xs); }
}